Fixes #7533 - auto resize pie chart labels to prevent overflow

Fixes #9594 - adds admin field to the hostgroup rabl

Fixes #10288 - prevent audits on update of puppetclass total hosts counter

Fixes #10535 - building a token instead of creating it until host is saved

Fixes #10402: add to_bool function for converting to boolean.

This commit adds a to_bool function for casting values to boolean
as well as an example usage.

http://projects.theforeman.org/issues/10402

fixes #10528 - lookup value should allow false and 0 values

fixes #10482 - get external user group members only once during refresh

Fixes #10355 - Prevent turbolinks loading puppetclass import

fixes #1213 - Get email reports of audit changes

fixes #10509 - add toggle for LDAP usergroup updating